Needing a bit of help with sample sizes :)


I'm new here so apologies if this is a simple question, I have tried a search online and here, but I'm am rather stuck.

I am trying to do a sample size calculation for a multiple pairwise comparison.

Within my study, participants are given three types of candy (A, B, and C). At the end, they must choose their favourite. I need to calculate a sample size, and potentially the proportion of individuals in each group won't be equal.

Any tips would be so greatly appreciated!! What is throwing me off is that there are three groups, instead of two.

Thanks so much for your time and help!!!